Issue 2374 - Implemented Tweaks section in options page

locale/en-US/options.json

 {
   "options_page_title": {
     "description": "Options page title",
     "message": "Adblock Plus Options"
   },
   "options_page_header_1": {
     "description": "Page title in navigation sidebar",
     "message": "Options"
   },
   "options_page_header_2": {
@@ skipping 123 matching lines @@
   "options_button_cancel": {
     "description": "Cancel button label",
     "message": "cancel"
   },
   "options_tweaks_title": {
     "description": "Section title in Advanced tab",
     "message": "Tweaks"
   },
   "options_tweaks_blockElement": {
     "description": "Show block Element option in Advanced tab",
-    "message": "Show <a>Block Element</a> right-click menu item"
+    "message": "Show <strong>Block Element</strong> right-click menu item"
+  },
+  "options_tweaks_showNotifications": {
+    "description": "Notification opt-out option in Advanced tab",
+    "message": "Show useful <strong>notifications</strong>"
+  },
+  "options_tweaks_safariContentBlocker": {
+    "description": "Switch between classic and Safari's content blocking",
+    "message": "Use Safari's content blocking mechanism"

[Sebastian Noack, 2016/02/25 19:23:35]

This feature should be indicated as experimental.

Also I'm not sure about the phrasing "content blocking mechanism" sounds rather
vague, as the old mechanism could arguably also described as such.  I don't have
an ultimate opinion, but here are some examples that sound more accurrate to me:

"Use Safari's native content blocking mechanism (experimental)" 
"Use Safari Content Blockers (experimental)"
"Use native Content Blockers (experimental)"

[Thomas Greiner, 2016/02/26 13:01:58]

Make sense. What about "Use Safari's native Content Blocking (experimental)"?
Because I noticed that they consistently call it "Content Blocking" on
https://developer.apple.com/library/ios/releasenotes/General/WhatsNewInSafari...

[Sebastian Noack, 2016/02/26 15:20:14]

Except when they call it Content Blockers:
https://webkit.org/blog/3476/content-blockers-first-look/

But I guess either should be fine.

[Thomas Greiner, 2016/02/29 17:32:42]

Done. Maybe they're referring to the product as Content Blocker and to the
feature/mechanism as Content Blocking.

   },
   "options_filterList_title": {
     "description": "Section title in Advanced tab",
     "message": "Filter lists"
   },
   "options_tab_overview": {
     "description": "Tab name in Advanced tab",
     "message": "Overview"
   },
   "options_tab_ownList": {
@@ skipping 63 matching lines @@
   "options_filterList_edit_own_list": {
     "description": "Entry in filter list section in Advanced tab",
     "message": "edit your filter list"
   },
   "options_customFilters_title": {
     "description": "Custom filters option name in Advanced tab",
     "message": "Blocking rules"
   },
   "options_customFilters_textbox_placeholder": {
     "description": "Adding custom filter textbox placeholder text in Advanced tab",
-    "message": "add your blocking rule here"
+    "message": "add your filter rule here"
   },
   "options_customFilter_edit": {
     "description": "Label for editing custom filter in Advanced tab",
     "message": "edit rules"
   },
   "options_customFilter_list": {
     "description": "Label for editing custom filter in Advanced tab",
     "message": "list view"
   },
   "options_customFilter_save": {
@@ skipping 138 matching lines @@
   },
   "options_language_ro": {
     "description": "Language name shown in add language modal dialog",
     "message": "Romanian"
   },
   "options_language_ru_uk": {
     "description": "Language name shown in add language modal dialog",
     "message": "Russian and Ukrainian"
   }
 }